Conduit fish-wire machine.



`B. DAHL. l ONDUIT FISH WIRE MACHINE. APPLICATION FILED JUNE l5, 1912.

1,076,870. Patented 001:. 28, 1913.

BENJAMIN peut, or MINNEAPOLIS, MINNESOTA.

CONDUIT FISH-WIRE MACHINE.

Specification of Letters Hatent. lamination mea :une 15,1912.` serial No. 703,928.

Patented Oct. 28, 1913.

To all 'whom it may concern Be it known that I, BENJAMIN DAHL, of f.\\'linneapolis, Hennepin county, Minnesota, have invented certain` new and useful Improvements in Conduit Fisl1-Wire Machines,

`of which the following is a specification.

The invention consists enerall in various constructions and combinations, all as hereinafter described and particularly pointed out 1n the clalms.

In the accompanying drawings forming part of this specification, Figure l is a side view of a conduit fish wire machine embodying my invention, Fig. 2 is a vertical sectional view of the same, Fig. 3 is a horizontal sectional view. j

In the drawing, 2 represents a casing Or frame having supporting legs 3. This casing is preferably in the form of a circular disk having a peripheral flange 4 and a centrally arranged hub 5.

6 is a fla-t disk7 also circular in form, fitting within the flange t and seated against the face of the disk or casing 2 and adapted to revolve on a stud 7 that is mounted in the hub 5;, A ring 8 holds thefdisk 6 in place within the flange l and allows it to turn freely on the stud 7. A handle 9 is mount ed on the disk 6 for convenience of rotation. The inner face of the disk 6 is provided with a spiral recess or groove l0 extending from a point near the center of the disk spirally to the periphery thereof, this groove or 're cess being of sufficient depth to receive a fish wire 11 inserted therein. By the term fish Wire l mean a steel wire of suitable gage to be fed thro-ugh the conduit into which it is desired to introduce the cable.

The casing 2 is provided with a radial opening 12 extending transversely of the groove l0 and a carriage 13 1s slldably mounted in guides in said recess and adapted to move back yand forth therein. This guide is provided with an anti-friction roller 14: with which the fish wire contacts, and a tube 15, preferably of metal, is mounted at one end'in said carriage and projects outwardly therefrom, and into this tube the outer end of the fish wire is inserted. A iexible continuation 16 of the tube is provided, having one end mounted on the tube 415 and the other end carried to any suit-- able point where it is desired to feed the fish wire into the conduit.' The carriage has a projection 17 thereon which is adapted to t into the spiral groove in the face of the disk 6 so that as the disk is revolved the car riage will move radially in its guides with respect to the disk. As the carriage moves over the periphery toward the center of the disk, it is evident that the operator will have a gradually increasing leverage on the Wire as the carriage approaches the center of the disk. This is important, as obviously the friction of the wire in the conduit will increase in proportion to the unwindin or unreeling of the wire as it is introduced Into the conduit. On the return movement or rewinding of the wire the friction will be greatest at the start and gradually decrease as the wire is re-wound and the carriage approaches the periphery of the disk. The leverage of the operator will decrease as the wire is re-wound, being greatest at the start ing point and decreasing as the friction of the wire decreases.

The end of the wire l1 is thrust into the socket 6 near the hub of the disk and is heldV stationary therein, and the wire is coiled in the spiral groove and its outer end thrust into the guide on the radially moving carriage. As the disk 6 is revolved to feed the wire `the convolutions of the wire will bear on the walls of the groove and be prevented thereby from bending or buckling, and during the outward feed of the wire it will press on the outer wall of the groove and when the wire is reeled up on the disk the pressure will be on the inner wall of the groove. I am thus able to prevent contact of the coils or convolutions of the wire with one another, prevent the wire from bending or buckling during the feeding operation, and insure the rapid feed of the wire or the re-coiling of the same with comparatively littleeflort on the part of the person revolving the disk.

Obviously, the disk may be made in various sizes and there may be any suitable number of convolutions of the groove therein according to the desired length of the fish wire, and in various other ways the de tails of construction may be modified without departing from the spirit of my invention. Y v

I claifn as my? invention l. A machine of the class described Comprising e stationery disk having a radial opening therein, a carriage slidable in said,

vopening and having a guide, and :L revolving fish Wire carrier contiguous to said carriage, substantially as described.

A machine of the class described comprising a supporting frame, a disk revolubly mounted therein and having a spirally arranged groove in its surface und a wire BENJAMIN DAHL.

Witnesses: l

GENEVIEVE E. SORENSEN, EDWARD A. PAUL. 

